社交媒体情境下旅游舆情传播路径研究--基于信息认知与情感渗透的耦合视角

本文以社交媒体用户为研究对象,借鉴网络场域理论和精细可能性模型,构建基于信息认知和情感渗透的双路径旅游舆情传播模型,对旅游舆情传播的具体路径进行实证研究。研究结果表明:在网络场域中,目的地刻板形象、舆情情景、媒体舆论通过信息认知和情感渗透两条路径传播旅游舆情,其中,媒体舆论对于社交媒体用户的传播意愿影响最大;而刻板形象仅通过情感渗透路径影响用户传播意愿;信息认知路径和情感渗透路径还需通过用户态度的中介作用来影响旅游舆情传播。基于上述研究结论,目的地处置旅游舆情事件应该密切关注网络舆论动态,分路径制定不同的应对策略,并合理运用新技术和新手段调和网络场域中受众的认知、情感和态度分歧,从而达到影响和管控目的地舆情事件传播走势的目的。

大学生可就业能力研究——基于旅游酒店业的实证分析

随着高校毕业生就业形势的日益严峻,提升大学生可就业能力成为高等教育机构高度关注的问题。从大学生可就业能力形成机制来说,不同学科和专业存在着很大的差异。本文从探讨可就业能力的内涵出发,梳理了大学生可就业能力的研究现状,并针对国内旅游酒店业进行实证分析。首先,采用深度访谈法,用质性研究构建旅游管理类专业大学生可就业能力模型。其次,通过问卷调查对指标代表性和鉴别力进行分析,以及对大学生可就业能力结构模型进行检验。最后,得到旅游管理专业大学生可就业能力的指标体系,包括学习能力、职业素养、人格素质和通用能力4个维度,共24个指标。

企业数字化能力对商业模式创新的影响——基于组织韧性和环境动荡性视角

基于赋能理论和动态能力理论,本文利用192份企业有效问卷,采用层次回归分析、PLS结构方程模型和PROCESS程序,实证检验了企业数字化能力与商业模式创新的作用机制,并探讨了组织韧性在企业数字化能力与商业模式创新之间的中介效应,以及环境动荡性的两阶段调节效应。结果表明:企业数字化能力对商业模式创新具有显著正向影响;组织韧性在企业数字化能力与商业模式创新关系中起到部分中介效应;环境动荡性正向调节组织韧性对商业模式创新的影响。在动荡环境下,企业将数字化视为提升组织动态能力的跳板,赋能组织架构,适应组织内外部环境的变化,重塑企业的管理运营模式,提高企业创新绩效。

Plastic-film-side seeding,as an alternative to traditional film mulching,improves yield stability and income in maize production in semi-arid regions

Planting under plastic-film mulches is widely used in spring maize production in arid-cold regions for water conservation and warming the soil.To ameliorate the associated issues such as plastic-film residues and additional labor during the“seedling release”in spring maize production,we have developed a plastic-film-side seeding(PSS)technology with the supporting machinery.In the semi-arid regions of Northwest China,a 7-year trial demonstrated that PSS increased plant number per hectare by 6547 and maize yield by 1686 kg ha–1compared with the traditional method of seeding under plastic-film mulch(PM).Two-year experiments were conducted in two semi-arid regions to further understand the effects of PSS on three important aspects of production:(i)the moisture and temperature of soil,(ii)maize development,yield output,and water use efficiency(WUE),and(iii)the revenue and plastic-film residuals in comparison with that of flat planting(CK)and PM.Continuous monitoring of the soil status demonstrated that,compared with CK,the PSS treatment significantly increased the temperature and moisture of the 0–20 cm soil in the seeding row at the early stage of maize development,and it also promoted grain yield(at 884–1089 kg ha^(–1))and WUE,achieving a similar effect as the PM treatment.Economically,the labor inputs of PSS were equal to CK,whereas the PM cost an additional 960 CNY ha–1in labor for releasing the seedlings from below the film.Overall,the PSS system increased profits by 5.83%(547 CNY ha^(–1)yr^(–1))and 8.16%(748 CNY ha^(–1)yr^(–1))compared with CK and PM,respectively.Environmentally,PSS achieved a residual film recovery rate of nearly 100%and eliminated 96 to 130 kg ha^(–1)of residual plastic-film in PM in 3–5 years of maize production.Collectively,these results show that PSS is an eco-friendly technique for improving yield stability and incomes for the sustainable production of maize in semi-arid regions.

玉米受精和早期子粒发育过程及逆境胁迫对其影响

玉米受精及子粒发育早期是决定穗粒数及粒重的重要时期,也是对环境变化相对较敏感的阶段。受精极核需要经历游离核、细胞化和细胞分化3个阶段形成胚乳,受精卵同样需要一系列的分裂分化形成最终的胚。玉米受精前极易遭受不良环境的影响,导致性器官发育不正常,影响花粉或花丝活力间接影响玉米受精过程。受精过程中的环境胁迫会通过阻碍花粉与花丝的识别、减缓花粉管在花丝中的延伸速率影响受精过程。子粒发育早期主要是受精极核分裂分化形成胚乳、受精卵分裂分化形成胚的过程,该阶段遭受环境胁迫下,胚乳细胞分裂受阻影响子粒库容。研究表明,逆境胁迫条件下,玉米的受精及子粒早期发育过程与碳水化合物的代谢以及激素的合成密切相关。